Quality requirements for fusion welding of metallic materials - Criteria for the selection of the appropriate level of quality requirementsExecutive summary Criteria for the selection of quality requirements for fusion welding of metallic materials. Abstract This International Standard, a part of the ISO 3834 series, provides a general outline of ISO 3834 and criteria to be taken into account for the selection of the appropriate level of quality requirements for fusion welding of metallic materials, among the three levels specified in ISO 3834 2, ISO 3834 3 and ISO 3834 4. It applies to

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